throw new CmisUpdateConflictException("Document " + objectId.getValue() + " is already checked out.");
String user = context.getUsername();
checkHasUser(user);
DocumentVersion pwc = verDoc.checkOut(content, user);
objectId.setValue(pwc.getId()); // return the id of the created pwc
// To be able to provide all Atom links in the response we need
// additional information:
if (context.isObjectInfoRequired()) {